Make expression parsing and error/warning reporting available through the

generic MCAsmParser interface.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77381 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 42 insertions, 0 deletions

diff --git a/include/llvm/MC/MCAsmParser.h b/include/llvm/MC/MCAsmParser.h
index 7cb6433..a6acf4e 100644
--- a/include/llvm/MC/MCAsmParser.h
+++ b/include/llvm/MC/MCAsmParser.h
@@ -10,8 +10,13 @@
 #ifndef LLVM_MC_MCASMPARSER_H
 #define LLVM_MC_MCASMPARSER_H
 
+#include "llvm/Support/DataTypes.h"
+
 namespace llvm {
 class MCAsmLexer;
+class MCValue;
+class SMLoc;
+class Twine;
 
 /// MCAsmParser - Generic assembler parser interface, for use by target specific
 /// assembly parsers.
@@ -25,6 +30,43 @@ public:
   virtual ~MCAsmParser();
 
   virtual MCAsmLexer &getLexer() = 0;
+
+  /// Warning - Emit a warning at the location \arg L, with the message \arg
+  /// Msg.
+  virtual void Warning(SMLoc L, const Twine &Msg) = 0;
+
+  /// Warning - Emit an error at the location \arg L, with the message \arg
+  /// Msg.
+  ///
+  /// \return The return value is always true, as an idiomatic convenience to
+  /// clients.
+  virtual bool Error(SMLoc L, const Twine &Msg) = 0;
+
+  /// ParseAbsoluteExpression - Parse an expression which must evaluate to an
+  /// absolute value.
+  ///
+  /// @param Res - The value of the absolute expression. The result is undefined
+  /// on error.
+  /// @result - False on success.
+  virtual bool ParseAbsoluteExpression(int64_t &Res) = 0;
+
+  /// ParseRelocatableExpression - Parse an expression which must be
+  /// relocatable.
+  ///
+  /// @param Res - The relocatable expression value. The result is undefined on
+  /// error.  
+  /// @result - False on success.
+  virtual bool ParseRelocatableExpression(MCValue &Res) = 0;
+
+  /// ParseParenRelocatableExpression - Parse an expression which must be
+  /// relocatable, assuming that an initial '(' has already been consumed.
+  ///
+  /// @param Res - The relocatable expression value. The result is undefined on
+  /// error.  
+  /// @result - False on success.
+  ///
+  /// @see ParseRelocatableExpression, ParseParenExpr.
+  virtual bool ParseParenRelocatableExpression(MCValue &Res) = 0;
 };
 
 } // End llvm namespace